Cumulative sales of plug-in vehicles through July 2018 show that more than half (53%) are all-electric vehicles (EV). Plug-in hybrid vehicles (PHEV), which use electricity from the grid as well as gasoline, make up the other 47%. Together, sales of EV and PHEV add to more than 900,000 cumulative vehicles from the first sales in December 2010 to July 2018.
Source:
Argonne National Laboratory, Light Duty Electric Drive Vehicles Monthly Sales Updates website, accessed September 6, 2018.